Orchestration
Definition
In computing, orchestration is the automated configuration, coordination, and management of computer systems and software. In the context of the cloud, it specifically refers to the automation of workflows for deploying and managing complex systems, especially containers and microservices.
Why It Matters
Orchestration tools are essential for managing modern, large-scale applications. They automate complex operational tasks that would be impossible to perform manually, such as deploying hundreds of containers, managing their lifecycle, and handling failures.
Contextual Example
Kubernetes is a container orchestration tool. A developer provides Kubernetes with a declarative configuration file stating the desired state (e.g., "I want to run 3 instances of my web server"). Kubernetes then works to make that state a reality, and will automatically restart any containers that fail.
Common Misunderstandings
- Orchestration is different from simple automation. Automation focuses on a single task, while orchestration arranges and coordinates multiple automated tasks to achieve a larger workflow.
- Kubernetes is the de facto standard for container orchestration.